the horizontal (x-axis) and vertical (y-axis) number line on a coordinate plane

5.

a flat surface of polyhedron

6.

to explain hwy a solution was chosen

9.

a unit of measure for angles and for temperature

11.

the number of squares unit needed to cover a surface

12.

a happening or occurrence

13.

to divide a segment,angle,or figure into two congurent parts

14.

a conclusion based on evidence provided

17.

a number that is multiplied by another number to find a product

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